I have never seen that, but I have seen them propolize other "too big" to move things. It is sort of their way to santize the situation.
I have seen wax worms in cracks and crevises where the bees can't get them. They particularly like boring in between the frame side bar and top bar.
They also seem to like the space between the SBB and the slide in tray when closed. The bees can't get to they, and they feed on the wax/pollen droppings falling thru the screen.